How can I make a screenshot programmatically in iOS?

How ca开发者_如何学Pythonn I make a screenshot programmatically in iOS?

have fun

UIGraphicsBeginImageContext(self.view.bounds.size);
[self.view.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *myScreenshot = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();